To be honest, we don't think Adele has ever said that she won't lose weight, ever - although her comments about her body shape tend to get reported as if that's what she's said, if you read what she actually said was she wouldn't lose weight because other people tell her she should:
Likewise, although Zoe Zoe Showbiz in today's Sunday Mirror heads her story:
Adele is shortly heading off to the States - so has decided to slim.
the only quote Zoe offers suggests that, actually, all that's happened is Adele is drinking less and the weightloss is a side-effect:
Which isn't quite the same thing as obsessively slimming in order to please the Americans.